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A car of mass 1000 kg moves on a circul...

A car of mass 1000 kg moves on a circular track of radius 20 m. If the coefficient of friction is 0.64, then the maximum velocity with which the car can move is :

A

15 m/s

B

11.2 m/s

C

20 m/s

D

18 m/s

Text Solution

Verified by Experts

The correct Answer is:
B
The relation between centripetal force and frictional force is
`" "F=mumg=(mv^(2))/r`
`" "v=sqrt(ugr)=sqrt(0.64 times 9.8 times 20)`
`" "=11.2m//s`
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